JPS6335061B2 - - Google Patents
Info
- Publication number
- JPS6335061B2 JPS6335061B2 JP13704980A JP13704980A JPS6335061B2 JP S6335061 B2 JPS6335061 B2 JP S6335061B2 JP 13704980 A JP13704980 A JP 13704980A JP 13704980 A JP13704980 A JP 13704980A JP S6335061 B2 JPS6335061 B2 JP S6335061B2
- Authority
- JP
- Japan
- Prior art keywords
- convergence
- picture tube
- color picture
- beams
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000010894 electron beam technology Methods 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 8
- 230000004907 flux Effects 0.000 description 10
- 239000012141 concentrate Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Description
【発明の詳細な説明】
本発明はカラー受像管用電子銃に関し、特に平
面上に配置された３電子ビームのコンバーゼンス
補正に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electron gun for a color picture tube, and more particularly to convergence correction of three electron beams arranged on a plane.
この種のインライン方式電子銃の３電子ビーム
のコンバーゼンスは、磁界補正用ポールピースと
磁界分布を変えた偏向ヨークとの組み合わせによ
り、動コンバーゼンス補正の大巾な省略または完
全な省略を行なうことが知られている。 It is known that the convergence of three electron beams in this type of in-line electron gun can be achieved by largely or completely omitting dynamic convergence correction by combining a magnetic field correction pole piece and a deflection yoke that changes the magnetic field distribution. It is being
第１図はインライン方式カラー受像管の偏向部
分の構成を示す平面図で、図において、電子銃
GG，GB，GRからそれぞれ発射された電子ビーム
BG，BB，BRはコンバーゼンス調整体１により補
正され、偏向ヨーク２により偏向されてスクリー
ン（図示せず）全面を走査するようにされてい
る。そして、コンバーゼンス調整体１である動コ
ンバーゼンス調整体と静コンバーゼンス調整体と
が同一平面に一体に配置されている。このため、
磁界補正用のポールピース（図示せず）へ偏向ヨ
ーク２による磁束、動コンバーゼンス用磁束、静
コンバーゼンスの磁束とが複雑に作用し、コンバ
ーゼンスの調整時に３電子ビームBB，BG，BR間
の干渉が大きく調整のむずかしさがあつた。また
第２図に示すように中央電子銃GGを完全に磁気
シールドすれば電子銃GB，GRによる干渉は少な
く調整はやさしくなるが、電子ビームBGによる
Ｇの位置はスクリーン周辺位置でＲ，Ｂの中央に
存在しなくなり他のビームＢ，Ｇとのコンバーゼ
ンスが困難になる。 Figure 1 is a plan view showing the configuration of the deflection section of an in-line color picture tube.
Electron beams emitted from G G , G B , and G R respectively
B G , B B , and B R are corrected by a convergence adjuster 1 and deflected by a deflection yoke 2 to scan the entire surface of a screen (not shown). A dynamic convergence adjustment body and a static convergence adjustment body, which are the convergence adjustment body 1, are integrally arranged on the same plane. For this reason,
The magnetic flux from the deflection yoke 2, the magnetic flux for dynamic convergence, and the magnetic flux for static convergence act in a complex manner on the pole piece (not shown) for magnetic field correction, and when adjusting the convergence, the three electron beams B B , B G , B R The interference was large and adjustment was difficult. Furthermore, as shown in Figure 2, if the central electron gun G is completely magnetically shielded, there will be less interference from the electron guns G B and G R , and adjustment will be easier, but the position of G caused by the electron beam B G will be at the periphery of the screen. It no longer exists in the center of R and B, making it difficult to converge with other beams B and G.
また、この改善として第３図に示すように、
BB，BG，BRの各電子ビーム間に遮蔽板３を設け
ることにより残留コンバーゼンスの非対称は改善
されるが、反面３ビームBB，BG，BR間の干渉が
やや大きくなる欠点がある。 In addition, as shown in Figure 3, as an improvement to this,
Providing a shielding plate 3 between each of the electron beams B B , B G , and BR improves the asymmetry of residual convergence, but on the other hand, the disadvantage is that the interference between the three beams B B , B G , and BR increases somewhat. There is.
本発明はこれらの欠点を解消するためになされ
たもので、インライン方式の電子銃で、その動、
静コンバーゼンスが同一面上で行なわれるカラー
受像管の動コンバーゼンスの調整を簡単に行なう
ことのできるカラー受像管用電子銃を提供するに
ある。 The present invention was made in order to eliminate these drawbacks, and is an in-line type electron gun.
To provide an electron gun for a color picture tube which can easily adjust dynamic convergence of a color picture tube in which static convergence is performed on the same plane.
この目的を達成するために、本発明によるカラ
ー受像管用電子銃においては遮蔽板により中央の
電子ビームを静・動コンバーゼンスによる磁束か
ら磁気シールドを行なうとともに、両サイドビー
ムについても動コンバーゼンスの垂直、水平の偏
向感度を補正してスクリーン周辺における電子ビ
ームの位置ズレを少なくするようにしたもので、
以下実施例を用いて詳細に説明する。第４図は本
発明によるカラー受像管用電子銃の遮蔽板４の構
造の一実施例を示す正面図で、第５図は第４図の
遮蔽板部分の斜視図である。 In order to achieve this purpose, in the color picture tube electron gun according to the present invention, the central electron beam is magnetically shielded from the magnetic flux caused by static and dynamic convergence using a shielding plate, and both side beams are also shielded from vertical and horizontal dynamic convergence. The deflection sensitivity is corrected to reduce the positional deviation of the electron beam around the screen.
This will be explained in detail below using examples. FIG. 4 is a front view showing an embodiment of the structure of the shielding plate 4 of the color picture tube electron gun according to the present invention, and FIG. 5 is a perspective view of the shielding plate portion of FIG. 4.
この磁気遮蔽部材である遮蔽板４は、図面に示
されているように、中央ビームＧの通路を包囲す
る第１の遮蔽部と、各電子ビームＲ，Ｇ，Ｂが設
けられた平面に垂直に伸びて両側ビームＲ，Ｂに
働く夫々の磁界を分離する第２の遮蔽部と、この
第２の遮蔽部から前記平面に平行に伸びた第３の
遮蔽部とを有する。 As shown in the drawing, the shielding plate 4, which is a magnetic shielding member, includes a first shielding part surrounding the path of the central beam G, and a plane perpendicular to the plane on which each of the electron beams R, G, and B is provided. It has a second shielding part that extends to separate the magnetic fields acting on both beams R and B, and a third shielding part that extends from the second shielding part in parallel to the plane.
また、第６図は第４図の遮蔽板４の作用を示す
平面図で、垂直の磁束VH及び水平の磁束HHを遮
蔽板４に集める事により両側ビームＢ，Ｒの偏向
感度を下げるようにし中央ビームＧに対する磁束
と両側の電子ビームＲ，Ｂに対する磁束とが均一
となるようにしている。 In addition, Fig. 6 is a plan view showing the action of the shielding plate 4 shown in Fig. 4. By concentrating the vertical magnetic flux V H and the horizontal magnetic flux H H on the shielding plate 4, the deflection sensitivity of the beams B and R on both sides is reduced. In this way, the magnetic flux for the central beam G and the magnetic flux for the electron beams R and B on both sides are made uniform.
また、遮蔽板４により各ビーム間はほゞ完全に
遮蔽されるので干渉は殆んど無くなる。 Further, since the beams are almost completely shielded by the shielding plate 4, there is almost no interference.
第７図は動・静コンバーゼンスと本発明による
遮蔽板４との関係を示した作用説明平面図で、図
は、ａ側は動コンバーゼンスの態様を示し、ｂ側
は静コンバーゼンスの態様を示す。図において、
静コンバーゼンスはマグネツトM1，M2，M3，
M4の回転により磁界の極性、強弱が調整されＥ
型コア５に導びかれてできた磁束SHにより外側の
ビームは中央のビームに集中するようにされてい
る。 FIG. 7 is an explanatory plan view illustrating the relationship between dynamic and static convergence and the shielding plate 4 according to the present invention. In the figure, the side a shows the mode of dynamic convergence, and the side b shows the mode of static convergence. In the figure,
Static convergence consists of magnets M 1 , M 2 , M 3 ,
The polarity and strength of the magnetic field are adjusted by rotating M4 .
The magnetic flux S H guided by the mold core 5 causes the outer beams to concentrate on the central beam.
つぎに、動コンバーゼンスは補正電流がD.C.S
からコイル６に流れ、この電流により発生する動
コンバーゼンス用の磁束DHにより青、赤電子ビ
ームBB，BGは中央ビームBGに集中するようにさ
れている。 Next, for dynamic convergence, the correction current is DCS
The current flows through the coil 6, and the dynamic convergence magnetic flux D H generated by this current causes the blue and red electron beams B B and B G to concentrate on the central beam B G.
なお、本発明によるコンバーゼンス補正は動コ
ンバーゼンス調整装置を有する場合について説明
したが、この発明はこれに限らずセルフダイナミ
ツクコンバーゼンス方式に使用してもよい。 Although the convergence correction according to the present invention has been described with respect to the case where a dynamic convergence adjustment device is provided, the present invention is not limited to this and may be used in a self-dynamic convergence system.
以上述べたように本発明によるカラー受像管に
よれば、コンバーゼンス調整が容易となり、短時
間で調整を行なうことができるなど種々の優れた
特長を有するものである。 As described above, the color picture tube according to the present invention has various excellent features such as easy convergence adjustment and adjustment in a short time.
第１図はカラー受像管の偏向部分の構成を示す
平面図、第２図は従来の磁気シールドをした場合
の電子銃とスクリーン周辺の残留コンバーゼンス
を示す正面図、第３図は各電子ビーム間に遮蔽板
を設けた従来のものの正面図、第４図、第５図は
本発明の要部をなすカラー受像管用電子銃の遮蔽
板の実施例を示す正面図および斜視図、第６図、
第７図は動作説明のためのそれぞれ正面図であ
る。
図において、１…コンバーゼンス調整体、２…
偏向ヨーク、３，４…遮蔽板、５…Ｅ型コア、６
…コイル。なお、図中同一符号は同一または相当
部分を示す。
Figure 1 is a plan view showing the configuration of the deflection part of a color picture tube, Figure 2 is a front view showing the residual convergence around the electron gun and screen when conventional magnetic shielding is used, and Figure 3 is the space between each electron beam. FIGS. 4 and 5 are a front view and a perspective view of an embodiment of a shielding plate for a color picture tube electron gun, which is a main part of the present invention, and FIGS.
FIG. 7 is a front view for explaining the operation. In the figure, 1... convergence adjustment body, 2...
Deflection yoke, 3, 4... Shielding plate, 5... E-type core, 6
…coil. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
面上に集中させる静コンバーゼンスと動コンバー
ゼンスの調整がほゞ同一面上で行なわれるカラー
受像管において、前記電子ビームの中央ビームの
通路を包囲する第１の遮蔽部と、前記平面に垂直
な方向に伸びて両側ビームに働く夫々の磁界を分
離する第２の遮蔽部と、この第２の遮蔽部から前
記平面に平行に伸びた第３の遮蔽部とを有する磁
気遮蔽部材を設けたことを特徴とするカラー受像
管用電子銃。1. In a color picture tube in which static convergence and dynamic convergence adjustment for concentrating three electron beams arranged on a plane onto a fluorescent surface are performed almost on the same plane, a color picture tube that surrounds the central beam path of the electron beams is used. a first shielding part that extends in a direction perpendicular to the plane and separates the respective magnetic fields acting on the beams on both sides; and a third shielding part that extends from the second shielding part in parallel to the plane. An electron gun for a color picture tube, comprising a magnetic shielding member having a shielding portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704980A JPS5761246A (en) | 1980-09-30 | 1980-09-30 | Electron gun for color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704980A JPS5761246A (en) | 1980-09-30 | 1980-09-30 | Electron gun for color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5761246A JPS5761246A (en) | 1982-04-13 |
| JPS6335061B2 true JPS6335061B2 (en) | 1988-07-13 |
Family
ID=15189673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13704980A Granted JPS5761246A (en) | 1980-09-30 | 1980-09-30 | Electron gun for color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761246A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8401444A (en) * | 1984-05-07 | 1985-12-02 | Philips Nv | PICTURE TUBE. |
-
1980
- 1980-09-30 JP JP13704980A patent/JPS5761246A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5761246A (en) | 1982-04-13 |
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